Square.



No. 866,531. PATENTED SEPT. 17,- 1907.

A. B. SOLLBRS.

SQUARE.

APPLIUATION FILED MAR. 5, 19o?.

THE Nmzms zrms cc., wAsHmsraN n'. e

ALBERT E. SOLLERS, OF MOUNT UNION, PENNSYLVANIA.

S QUARE Specification of Letters Patent.

Patented Sept. 17, 1907.

Application led March 5,1907. Serial No. 360,673.

To all whom it may concern.'

Be it Aknown. that I, ALBERT E, SoLLE ns, a citizen of the United States, residing at Mount Union, in the county of Hun tingdon and State of Pennsylvania, have invented new and useful Improvements in Squares, of which the following is a specification.

This invention relates to a square so designed that the lengths, cuts and pitches of main, jack, and hip and valley rafters may be easily and accurately determined and laid out, and it relates more particularly to a folding square of this type that can be conveniently folded into a small compass for carrying in the pocket.

The invention has' for one of its objects to improve and simplify the construction and operationof devices of this character so to be comparatively easy and inexpensive to manufacture, composed of few parts, easy to manipulate, and adapted to enable a large variety of angles or bevels 'to be obtained.

A further object of the invention is to provide a square having a plurality of pivotally mounted blades arranged on the stock or body which are independently adj ust-able for enabling different angles or pitches to be obtained.

Another object of the invention is to provide a simple form of stock or body into which the blade or blades are adapted to .fold when the square' is not in use.

A still further object is to mount the blades in such a manner that one can be adjusted to any position between zero and ninety degrees and the other between rero and two hundred and seventy degrees.

With these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more fully described hereinafter and set forth with particular-ity in the claims appended hereto.

In the accompanying drawing, which illustrates one of the embodiments of the invention, Figure l is a plan view of the square showing one of the blades open. Fig. 2 is a bottom plan view thereof. Fig. 3 isa similar View showing the second blade open. Fig. 4 is a section of the square with blades in folded position.

Similar reference characters are employed to designate similar parts throughout the several views.

Referring to the drawing, A designates the stock of the square, and B and O, the two blades thereof that are pivotally connected with thc stoel; in such a manner as to fold back against the saine for convenience in carrying the square in a pocket when not in use. The stock A is preferably constructed of a rectangular piece of sheet metal that is doubled on a longitudinal center line into a body of U-shaped cross-section, as shown in Fig. 4. The two plates I of the stock are suitably spaced apart to form a pocket 2 for receiving the blades. The body of the stock A is cut away at 3 at one end at point inline with the crease or .fold l and the inner end of this fitting in one of the openings 7 which is correspondingly squared, and on the screw pivot is a cap nut l() having a bail handle ll whereby the jaws G are clamped to the blades that are disposed between the jaws, the blades being apertured to receive the pivot 8.

The blade B is so pivoted that the corner l2 engages the shoulder 5 as shown in Fig. l, thereby'limiting the movement of the blade to an arc of ninety degrees, and when the blade is in the position shown in Fig. l, the square is adapted for use as an ordinary L or try-square, and when in any other intermediate position, it is adapted for use as a bevel square for acute angles.

The blade C as shown in Fig. 3, is rounded at its pivoted end so that it is capable of swinging through an arc of two -hundred and seventy degrees, the shoulder 5 of the stock serving to limit the opening movement of the blade. Thus, it will be seen that the blade O is adapted for use in laying out acute or obtuse angles of a avide range.

If desired, the blades can be both opened to their full extent so as to form a straight edge of almost twice the length of the blades, and if desired, these blades may have a lineal scale for measuring purposes. When the blades are fully extended, both of them will engage the shoulder 5. In adjusting the blades, the clamping nut l0 is slightly loosened to permit freedom of movement and after the desired set of the blade or blades is obtained, the nut l0 is securely tightened to firmly clamp the blades in position.

In order to adapt the square for use in laying out and determining lengths, cuts and pitches of rafters of vari- Ous characters, the stock is provided on opposite sides with tables designated generally by l5 and IG each having columns of figures denoting the pitch angles and a bottom row of figures designating the spans corresponding to the figures in the columns. The table l5 is used for ascertaining the factors employed for principal rafters, while those of the table 16 are employed for the measurements for hip and valley rafters.

On the top side ofthe blade B, as shown in Fig. l, are pitch or bevel degree lines 17 and 1.8 that are read in connection with the table I5 employed for laying out or determining the top and bottom cuts of the principal rafters. On the bottom side of the blade, as shown in Fig. 2, are pitch or bevel degree lines I9, 20 and 2l that are employedv in connection withthe table 16 for determining the proper set of the blade for bottom, top and side cuts of hip and valley rafters. For jack rafters, a table 22 of figures denoting pitch angles and other desgnations is employed on the blade C and on the same side of the blade are pitch or bevel degree lines 2A, whereby the blade can be set for determining the various cuts for jack rafters.

From the foregoing description taken in connectionY with the accompanying drawing, the advantages oi the Having thus described the invention, what I claim ISI- l. A square comprising a stock composed of a single piece of sheet metal doubled en itself on a central longitudinal line to form a pocket and cut away at the bend to form a pair of jaws and a shoulder at the inner end ot the jaws, a pair of blades pivoted between the jaws and foldable inte the pocket, one of the blades having; rounded corners to swing free of the shoulder and the other blade being adapted to engage the shoulder when open t0 its full extent, and means for clampingl the blades and jaws together.

2. A square comprising a stock, a plurality of blades pivotally mounted thereon adapted to fold upon the stock,

and means for limiting the opening movementaot one.

blade to ninetyv degrees and the opening movement of the other blade'to 'a greater angle.

2, A squaref'eomprising a stock composed of a single piece of sheet metal bent longitudinally to form a pocket and cut away at one end in the bend or crease to present a pair of spaced jaws and a shoulder, tables of suitable characters on opposite sides of the stock, a pair ot' blades pivoted between the jaws to fold into the pocket and adapted to swing open to different angles, the said shoulder forming a stop for limiting the opening movement oi the blades, and means for clampingl the blades in adjusted position, there being suitable pitch lines on the blades.

l, A square comprising a metal stock of U-shaped crosssection forming' a single pocket, a plurality of blades pivotally connected with the stock and foldablc into the pocket, a clamping device common to the blades for holding the latter in Iixed position, and means for limiting the opening' movement of the blades.

square comprising a sheet metal stock doubled on a longitudinal center' line and cut away at one end along the fold or crease of the stock to forni a shoulder, a pair et' blades pivoted between the table portions ot the stock to fold and unfold between the said portions and adapted to abut the shoulder when in full open position, and a clamping device for holding the blades in lixed position with respect to the stock.

In testimony whereof, l alix my signature in presence ot' two witnesses.

ALBER'L E. SOLLERS.

Witnesses FnaNK H. HAuuisoN, Ilowann B. WooLruAN, 

